What is the role of cryolite in the metallurgy of aluminium?

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asked Dec 22, 2017 in Chemistry by sforrest072 (157,439 points) 61 411 949

What is the role of cryolite in the metallurgy of aluminium?

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answered Dec 22, 2017 by mdsamim (213,225 points) 5 10 15
selected Dec 22, 2017 by sforrest072
 
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Cryolite (Na3AlF6) has two roles in the metallurgy of aluminium:
1. To decrease the melting point of the mixture from 2323 K to 1140 K.
2. To increase the electrical conductivity of Al2O3.

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